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      1 // run
      2 
      3 // Copyright 2013 The Go Authors. All rights reserved.
      4 // Use of this source code is governed by a BSD-style
      5 // license that can be found in the LICENSE file.
      6 
      7 // Used to die in runtime due to init goroutine exiting while
      8 // locked to main thread.
      9 
     10 package main
     11 
     12 import (
     13 	"os"
     14 	"runtime"
     15 )
     16 
     17 func init() {
     18 	c := make(chan int, 1)
     19 	defer func() {
     20 		c <- 0
     21 	}()
     22 	go func() {
     23 		os.Exit(<-c)
     24 	}()
     25 	runtime.Goexit()
     26 }
     27 
     28 func main() {
     29 }
     30 
     31 /* Before fix:
     32 
     33 invalid m->locked = 2
     34 fatal error: internal lockOSThread error
     35 
     36 goroutine 2 [runnable]:
     37 runtime.MHeap_Scavenger()
     38 	/Users/rsc/g/go/src/pkg/runtime/mheap.c:438
     39 runtime.goexit()
     40 	/Users/rsc/g/go/src/pkg/runtime/proc.c:1313
     41 created by runtime.main
     42 	/Users/rsc/g/go/src/pkg/runtime/proc.c:165
     43 
     44 goroutine 3 [runnable]:
     45 main.func002()
     46 	/Users/rsc/g/go/test/fixedbugs/issue5963.go:22
     47 created by main.init1
     48 	/Users/rsc/g/go/test/fixedbugs/issue5963.go:24 +0xb9
     49 exit status 2
     50 */
     51